Object is not rendered
You have Duplication enabled on the cylinder.  Please see the manual for proper Dupligroup use: 



EDIT: Without knowing the history behind the creation of this blend, it's hard to say why that was like that and what/how it was being duplicated.  You and @m.ardito mentioned linking from an external file.  As the manual states:


  Note that if the DupliGroup was linked from an external file the Object Data (mesh, materials, textures, transforms) will also still be linked from the original group. However, the various object’s parent-child relationships do not carry over.